User's Manual

CF CONTROLLER S3C2450X RISC MICROPROCESSOR
8-22
2.14 ATA_PIO_TIME REGISTER
Register Address R/W Description Reset Value
ATA_PIO_TIME 0x4B80192C R/W ATA PIO Timing Control register 0x0001_C23
8
ATA_PIO_TIME Bits Description R/W Reset Value
Reserved [31:20] Reserved bits R 0x0
pio_teoc [19:12] PIO timing parameter, teoc, end of cycle time
It shall not have zero value.
teoc = HCLK time * (pio_teoc + 1)
R/W 0x1C
pio_t2 [11:4] PIO timing parameter, t2, DIOR/Wn pulse width
It shall not have zero value.
t2 = HCLK time * (pio_t2 + 1)
R/W 0x23
pio_t1 [3:0] PIO timing parameter, t1, address valid to DIOR/Wn
t1 = HCLK time * (pio_t1 + 1)
R/W 0x8
2.15 ATA_XFR_NUM REGISTER
Register Address R/W Description Reset Value
ATA_XFR_NUM 0x4B801934 R/W ATA Data Transfer Number register 0x0000_0000
ATA_XFR_NUM Bits Description R/W Reset Value
xfr_num [31:1] Data transfer number. R/W 0x00000000
Reserved [0] Reserved bits R 0x0
2.16 ATA_XFR_CNT REGISTER
Register Address R/W Description Reset Value
ATA_XFR_CNT 0x4B801938 R/W ATA Data Transfer Counter register 0x0000_0000
ATA_XFR_CNT Bits Description R/W Reset Value
xfr_cnt [31:1] Current remaining transfer counter. This value counts
down from ATA_XFR_NUM. It goes to zero when pre-
defined all data has been transferred.
R/W 0x00000000
Reserved [0] Reserved bits R 0x0